def test_projection(self):
atol = 0.1 # accomodate scaling, values are in (0,1), but will be scaled slightly
mapper = KeplerMapper()
data = np.random.rand(100, 5)
lens = mapper.fit_transform(data, projection=[0, 1])
np.testing.assert_allclose(lens, data[:, :2], atol=atol)
lens = mapper.fit_transform(data, projection=[0])
np.testing.assert_allclose(lens, data[:, :1], atol=atol)
def test_distance_matrix(self):
# todo, test other distance_matrix functions
mapper = KeplerMapper(verbose=4)
X = np.random.rand(100, 10)
lens = mapper.fit_transform(X, distance_matrix="euclidean")
X_pdist = distance.squareform(distance.pdist(X, metric="euclidean"))
lens2 = mapper.fit_transform(X_pdist)
np.testing.assert_array_equal(lens, lens2)
def test_agglomerative_clustering(self):
mapper = KeplerMapper()
X = np.random.rand(100, 2)
lens = mapper.fit_transform(X)
graph = mapper.map(lens, X, clusterer=cluster.AgglomerativeClustering())
def test_format_mapper_data(self, jinja_env):
mapper = KeplerMapper()
data, labels = make_circles(1000, random_state=0)
lens = mapper.fit_transform(data, projection=[0])
graph = mapper.map(lens, data)
color_function = lens[:, 0]
inverse_X = data
projected_X = lens
projected_X_names = ["projected_%s" % (i) for i in range(projected_X.shape[1])]
inverse_X_names = ["inverse_%s" % (i) for i in range(inverse_X.shape[1])]
custom_tooltips = np.array(["customized_%s" % (l) for l in labels])
graph_data = format_mapper_data(
graph,
color_function,
inverse_X,
inverse_X_names,
projected_X,
projected_X_names,
custom_tooltips,
jinja_env,
)
# print(graph_data)
# Dump to json so we can easily tell what's in it.
graph_data = json.dumps(graph_data)
# TODO test more properties!
assert "name" in graph_data
assert """cube2_cluster0""" in graph_data
assert """projected_0""" in graph_data
assert """inverse_0""" in graph_data
assert """customized_""" in graph_data
def profile():
num_sets = 100
blob_size = 1000
nr_cubes = 10
overlap = 0.2
blob_list = []
for i in range(num_sets):
data, _ = datasets.make_blobs(blob_size)
blob_list.append(data)
mapper = KeplerMapper(verbose=0)
pr = cProfile.Profile()
pr.enable()
for data in blob_list:
lens = mapper.fit_transform(data)
graph = mapper.map(lens,
data,
nr_cubes=nr_cubes,
overlap_perc=overlap)
pr.disable()
s = io.StringIO()
sortby = 'cumulative'
ps = pstats.Stats(pr, stream=s).strip_dirs().sort_stats(sortby)
ps.print_stats("kmapper")
print("Ran {} blobs of size {} with params (nr_cubes:{}\toverlap:{})".format(num_sets, blob_size, nr_cubes, overlap))
print(s.getvalue())
def test_precomputed(self):
mapper = KeplerMapper()
X = np.random.rand(100, 2)
X_pdist = distance.squareform(distance.pdist(X, metric="euclidean"))
lens = mapper.fit_transform(X_pdist)
graph = mapper.map(
lens,
X=X_pdist,
cover=Cover(n_cubes=10, perc_overlap=0.8),
clusterer=cluster.DBSCAN(metric="precomputed", min_samples=3),
precomputed=True,
)
graph2 = mapper.map(
lens,
X=X,
cover=Cover(n_cubes=10, perc_overlap=0.8),
clusterer=cluster.DBSCAN(metric="euclidean", min_samples=3),
)
assert graph["links"] == graph2["links"]
assert graph["nodes"] == graph2["nodes"]
assert graph["simplices"] == graph2["simplices"]
def test_color_function_deprecated_replaced():
km = KeplerMapper()
X, labels = make_circles(1000, random_state=0)
lens = km.fit_transform(X, projection=[0])
color_values = lens[:, 0]
sc = km.map(lens, X)
X_names=[]
lens_names=[]
custom_tooltips = np.array(["customized_%s" % (l) for l in labels])
with warnings.catch_warnings(record=True) as w:
# Cause all warnings to always be triggered.
warnings.simplefilter("always")
# TODO: plotlyviz.plotlyviz
# plotlyviz.get_mapper_graph
json_graph, mapper_summary, colorf_distribution = get_mapper_graph(sc, color_function=color_values)
_test_raised_deprecation_warning(w)
# plotlyviz.scomplex_to_graph
_ = scomplex_to_graph(
simplicial_complex=sc,
color_function=color_values,
X=X,
X_names=X_names,
lens=lens,
lens_names=lens_names,
custom_tooltips=custom_tooltips,
colorscale=default_colorscale,
)
_test_raised_deprecation_warning(w)
def profile():
num_sets = 100
blob_size = 1000
n_cubes = 10
overlap = 0.2
blob_list = []
for i in range(num_sets):
data, _ = datasets.make_blobs(blob_size)
blob_list.append(data)
mapper = KeplerMapper(verbose=0)
pr = cProfile.Profile()
pr.enable()
for data in blob_list:
lens = mapper.fit_transform(data)
graph = mapper.map(lens, data, cover=Cover(n_cubes=n_cubes, perc_overlap=overlap))
pr.disable()
s = io.StringIO()
sortby = "cumulative"
ps = pstats.Stats(pr, stream=s).strip_dirs().sort_stats(sortby)
ps.print_stats("kmapper")
print(
"Ran {} blobs of size {} with params (n_cubes:{}\toverlap:{})".format(
num_sets, blob_size, n_cubes, overlap
)
)
print(s.getvalue())
def test_lens_size(self):
mapper = KeplerMapper()
data = np.random.rand(100, 10)
lens = mapper.fit_transform(data)
assert lens.shape[0] == data.shape[0]
def test_logging_in_fit_transform(self, capsys):
mapper = KeplerMapper(verbose=2)
data = np.random.rand(100, 2)
lens = mapper.fit_transform(data)
captured = capsys.readouterr()
assert "Composing projection pipeline of length 1" in captured[0]
def test_affinity_prop_clustering(self):
mapper = KeplerMapper()
X = np.random.rand(100, 2)
lens = mapper.fit_transform(X)
graph = mapper.map(lens, X, clusterer=cluster.AffinityPropagation())
def test_visualize_graph_with_cluster_stats_above_below(self):
mapper = KeplerMapper()
X = np.ones((1000, 3))
ids = np.random.choice(20, 1000)
X[ids, 0] = 10
lens = mapper.fit_transform(X, projection=[0])
graph = mapper.map(lens, X)
output = mapper.visualize(graph, X=X, lens=X)
def test_format_meta_with_meta(self):
mapper = KeplerMapper()
data = np.random.rand(1000, 10)
lens = mapper.fit_transform(data, projection=[0])
graph = mapper.map(lens, data)
cm = "My custom_meta"
fmt = format_meta(graph, cm)
assert fmt["custom_meta"] == cm
def test_precomputed_with_knn_lens(self):
mapper = KeplerMapper()
X = np.random.rand(100, 5)
lens = mapper.fit_transform(X,
projection="knn_distance_3",
distance_matrix="chebyshev")
assert lens.shape == (100, 1)
def test_lens_names(self):
mapper = KeplerMapper()
data = np.random.rand(100, 5)
lens = mapper.fit_transform(data)
graph = mapper.map(lens, data)
template = mapper.visualize(graph=graph)
template2 = mapper.visualize(graph=graph, lens_names=[])
assert template == template2
def test_visualize_standalone(self):
# visualize will run on a fresh mapper object
mapper = KeplerMapper()
data = np.random.rand(100, 10)
lens = mapper.fit_transform(data, projection=[0])
graph = mapper.map(lens, data)
new_mapper = KeplerMapper()
viz = new_mapper.visualize(graph)
def test_visualize_one_color_function(self):
mapper = KeplerMapper()
data, labels = make_circles(1000, random_state=0)
lens = mapper.fit_transform(data, projection=[0])
graph = mapper.map(lens, data)
color_values = lens[:, 0]
mapper.visualize(graph,
color_values=color_values,
color_function_name=["hotdog"])
def test_format_meta(self):
mapper = KeplerMapper()
data = np.random.rand(1000, 10)
lens = mapper.fit_transform(data, projection=[0])
graph = mapper.map(lens, data)
assert ("<p>%s</p>" % (len(graph["nodes"])) in format_meta(graph))
assert ("<h3>Description</h3>\n<p>A short description</p>"
in format_meta(graph,
custom_meta=[("Description",
"A short description")]))
def test_file_not_written(self, tmpdir):
mapper = KeplerMapper()
file = tmpdir.join('output.html')
data = np.random.rand(1000, 10)
lens = mapper.fit_transform(data, projection=[0])
graph = mapper.map(lens, data)
viz = mapper.visualize(graph, path_html=file.strpath, save_file=False)
assert len(tmpdir.listdir()) == 0, "file was never written to"
def test_file_not_written(self, tmpdir):
mapper = KeplerMapper(verbose=1)
file = tmpdir.join("output.html")
data = np.random.rand(1000, 10)
lens = mapper.fit_transform(data, projection=[0])
graph = mapper.map(lens, data)
viz = mapper.visualize(graph, path_html=file.strpath, save_file=False)
assert len(tmpdir.listdir()) == 0, "file was never written to"
def test_no_warn_normally(self, recwarn):
""" Confirm that deprecation warnings behave as expected"""
mapper = KeplerMapper()
data = np.random.rand(100, 10)
lens = mapper.fit_transform(data)
warnings.simplefilter("always")
graph = mapper.map(lens, data)
assert len(recwarn) == 0
assert DeprecationWarning not in recwarn
def test_format_meta_with_meta(self):
mapper = KeplerMapper()
data = np.random.rand(1000, 10)
lens = mapper.fit_transform(data, projection=[0])
graph = mapper.map(lens, data)
color_function_name = ["Row number"]
node_color_function = "mean"
cm = "My custom_meta"
fmt = _format_meta(graph, color_function_name, node_color_function, cm)
assert fmt["custom_meta"] == cm
def test_file_written(self, tmpdir):
mapper = KeplerMapper()
file = tmpdir.join("output.html")
data = np.random.rand(1000, 2)
lens = mapper.fit_transform(data, projection=[0])
graph = mapper.map(lens, data)
viz = mapper.visualize(graph, path_html=file.strpath)
assert file.read() == viz
assert len(tmpdir.listdir()) == 1, "file was written to"
def test_no_color_values_many_color_function_exception(self):
mapper = KeplerMapper()
data, labels = make_circles(1000, random_state=0)
lens = mapper.fit_transform(data, projection=[0])
graph = mapper.map(lens, data)
with pytest.raises(Exception) as excinfo:
color_values = mapper.visualize(
graph,
color_values=None,
color_function_name=["hotdog", "hotdog", "hotdiggitydog"],
)
assert "Refusing to proceed" in str(excinfo.value)
def test_visualize_multiple_node_color_functions(self):
""" convenience test for generating a vis with multiple node_color_values but 1d color_values"""
mapper = KeplerMapper()
data, labels = make_circles(1000, random_state=0)
lens = mapper.fit_transform(data, projection=[0])
graph = mapper.map(lens, data)
color_values = lens[:, 0]
mapper.visualize(
graph,
color_values=color_values,
color_function_name="hotdog",
node_color_function=["mean", "std", "median", "max"],
)
def test_new_api_old_defaults(self):
mapper = KeplerMapper()
data = np.random.rand(100, 10)
lens = mapper.fit_transform(data)
_ = mapper.map(lens, data, nr_cubes=10)
c2 = mapper.cover
assert c2.perc_overlap == 0.1
_ = mapper.map(lens, data, overlap_perc=0.1)
c2 = mapper.cover
assert c2.n_cubes == 10
def test_color_function_deprecated_replaced(self, default_colorscale):
mapper = KeplerMapper()
data, labels = make_circles(1000, random_state=0)
lens = mapper.fit_transform(data, projection=[0])
graph = mapper.map(lens, data)
color_values = lens[:, 0]
node_color_function = "mean"
inverse_X = data
projected_X = lens
projected_X_names = [
"projected_%s" % (i) for i in range(projected_X.shape[1])
]
inverse_X_names = [
"inverse_%s" % (i) for i in range(inverse_X.shape[1])
]
custom_tooltips = np.array(["customized_%s" % (l) for l in labels])
# https://docs.python.org/3/library/warnings.html#testing-warnings
with warnings.catch_warnings(record=True) as w:
# Cause all warnings to always be triggered.
warnings.simplefilter("always")
# kmapper.visualize
html = mapper.visualize(graph,
color_function=lens,
color_function_name="lens[:, 0]")
_test_raised_deprecation_warning(w)
# visuals._format_mapper_data
graph_data = _format_mapper_data(
graph=graph,
color_function=color_values,
node_color_function=node_color_function,
X=inverse_X,
X_names=inverse_X_names,
lens=projected_X,
lens_names=projected_X_names,
custom_tooltips=custom_tooltips,
)
_test_raised_deprecation_warning(w)
# visuals._graph_data_distribution
histogram = _graph_data_distribution(
graph,
color_function=lens,
node_color_function=node_color_function,
colorscale=default_colorscale,
)
_test_raised_deprecation_warning(w)
def test_no_color_values_one_color_function_no_exception_yes_warning(self):
mapper = KeplerMapper()
data, labels = make_circles(1000, random_state=0)
lens = mapper.fit_transform(data, projection=[0])
graph = mapper.map(lens, data)
with warnings.catch_warnings(record=True) as w:
# Cause all warnings to always be triggered.
warnings.simplefilter("always")
color_values = mapper.visualize(graph,
color_values=None,
color_function_name=["hotdog"])
assert "unexpected" in str(w[-1].message)
def test_visualize_multiple_color_functions(self):
""" convenience test for generating a vis with multiple color_values"""
mapper = KeplerMapper()
data, labels = make_circles(1000, random_state=0)
lens = mapper.fit_transform(data, projection=[0])
graph = mapper.map(lens, data)
color_values = lens[:, 0]
cv1 = np.array(lens)
cv2 = np.flip(cv1)
cv = np.column_stack([cv1, cv2])
mapper.visualize(graph,
color_values=cv,
color_function_name=["hotdog", "hotdiggitydog"])
def test_str_options(self):
mapper = KeplerMapper()
data = np.random.rand(100, 10)
options = [
["sum", np.sum],
["mean", np.mean],
["median", np.median],
["max", np.max],
["min", np.min],
["std", np.std],
["l2norm", np.linalg.norm],
]
first_point = data[0]
last_point = data[-1]
for tag, func in options:
lens = mapper.fit_transform(data, projection=tag, scaler=None)
np.testing.assert_almost_equal(lens[0][0], func(first_point))
np.testing.assert_almost_equal(lens[-1][0], func(last_point))
# For dist_mean, just make sure the code runs without breaking, not sure how to test this best
lens = mapper.fit_transform(data, projection="dist_mean", scaler=None)
def test_warn_old_api(self):
""" Confirm old api works but throws warning """
mapper = KeplerMapper()
data = np.random.rand(100, 10)
lens = mapper.fit_transform(data)
with pytest.deprecated_call():
graph = mapper.map(lens, data, nr_cubes=10)
with pytest.deprecated_call():
graph = mapper.map(lens, data, overlap_perc=10)
with pytest.deprecated_call():
graph = mapper.map(lens, data, nr_cubes=10, overlap_perc=0.1)
def test_visualize_standalone_same(self, tmpdir):
"""ensure that the visualization is not dependent on the actual mapper object."""
mapper = KeplerMapper()
file = tmpdir.join("output.html")
data = np.random.rand(1000, 10)
lens = mapper.fit_transform(data, projection=[0])
graph = mapper.map(lens, data)
viz1 = mapper.visualize(graph, path_html=file.strpath)
new_mapper = KeplerMapper()
viz2 = new_mapper.visualize(graph, path_html=file.strpath)
assert viz1 == viz2
def test_visualize_standalone_same(self, tmpdir):
""" ensure that the visualization is not dependent on the actual mapper object.
"""
mapper = KeplerMapper()
file = tmpdir.join('output.html')
data = np.random.rand(1000, 10)
lens = mapper.fit_transform(data, projection=[0])
graph = mapper.map(lens, data)
viz1 = mapper.visualize(graph, path_html=file.strpath)
new_mapper = KeplerMapper()
viz2 = new_mapper.visualize(graph, path_html=file.strpath)
assert viz1 == viz2
